Combination radiant and circulating gas heater



Sept. 20, 19.32. w. A. GRISWOLD COMBINATION RADIANT AND CIRCULATING GAS HEATER Filed Sept. 4, 1950 2 Sheets-Sheet 1 I WWI/IIIIIII/I/ Sept. 20, 1932. w. A. GRISWOLD COMBINATION RADIANT AND GIRCULATING GAS HEATER Filed Sept. 4. 19.30

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Patented Sept. 20,1932

WILLIAM A; eras eta. i esrrv rta en ee ,r

omma-error. were an cr amearns ease HEATER.

. Application filed burned is used for heating air travelingthrough-fiues to be discharged into the room, and HLWlllCh some of "the'fuel is used "for heating radiant units or mantles from which the heat is projected'direotly byradiant energy. into the room. I 7

A further ob'jeet is to provide airont rowofgas pert-s for supplying theradiant mantles vertically: arrangedalong the front of the stove and a rear rowioi; ports for supplying the heat for the air circulatory fiues,

Another object is to provide a unitary burner having a front rowrof gas ports and aninner row of gas. port's and simplified improved means for quickly installing the burner and holding it-securelyinposition.

The above referred to important features,

and other features of my inventionyare in corporated in the structure disclosed on the drawings, in which drawings:

Figure 1 1s a perspective elevatlon of the heater with the outer casing removed, and parts of the stove structure broken away to more clearly disclose operation. g

Figure '2 is an enlarged vertical section of the heater on plane IL-ll of Figure 1;

the arrangement and Figure 4 is an enlarged plan view of one end of. the burner and the surrounding supporting framework;

, Figure 5 is a front elevation ofone endof the burner with the supporting framework Figure dis a section to on'plane vlfiVl of Figure 2.

'ihe heater shown comprises'a'n outer or ornamental casing orenclosure, and the in? nerheating structure surrounded and en closed by the outer ornamental casing. The

outer casing comprises a base structure mounted on legs 11. The ornamental front-1 12 is supported on the base along the front are 3 is an. enlarged section on line a IHIII on Figure 2;

,4, 1920 Serial so. erases;

edge; thereof while the rear wall 13 and-theside walls 14 are mounted along the rear'and' side edges of the base; these walls and the front 12'being surmounted by the ornamental top 15 havingthe passageways 16 torthe outflow of heated air into theroom which is to be heated. The base structure, the front 12,and the top 15 may be in the. formrof castings and the rear and side walls maybe u I inthe form of sheet metal panels, all suitably ornamented by enameling or otherwise. i The inner or heating structure comprises 7 a bed plate or base 17 which is supporteclby. lugs 18 extendingfrom thebase 1d of the outer casing. lnwardly a distance from its rear edge this bed plate 17 supports a row of Vertical flue structures 19, of which there may be any. number, three being shown. Each flue has longitudinally extending ball lei and distributor .ribs 20 extending. there; through and. seats on the bed plate 17 over an air inlet openingQl, so that air mayffiow upwardly through the fiues to be heated.

- iThe flue units are surrounded by anlencloe I sure structure coniprisingla rear wallz22',side walls 23 iand 24, a top wall 255 and a front: wall 26,the'rear and sidewallsextending between the bed plate 17 and the top wall 25-butthe front Wall 26 extendsdownward- 1y from the top wall and. terminating a distance iabovethe bed plate and is'provided with aforward deflection 27 forming ahoodon canopy.'Theirearv and side walls are secured at their lower ends in any suitablev manner- .to. the bed plate 17 and at. their 1 upper ends are: secured'to the topplate25, f while the front Wall 26 is securedto the-side; walls. 7

surrounded by depending flanges29 which: interlock with the flanged ends 30 ofthe flue v y g g units so that these fiueunits will be aceue' reduced'scale taken rately aligned; c

p The flue units arespaced forwardly aidise' 'tance away from the rearwall: 22 and thel.

units arewalso spaced apart laterally and plane and abutting each'other between the;

31,these webs being in a coinmonhorizontal;

The top plate has the openings28'.

the rear and side walls 22, 23, and 24, and

the top plate 25, is connected with the outlet adapted for connection with a suitable outlet flue or chimney, The rear Wall 13 of the outer casing is provided with the opening 36 for the passage of the stove pipe leading from the outlet 35.

A distance above the lower ends of the flue units each unit is encompassed by a flange I 37 and these flanges between the units abut laterally against each other and at the outer sides of the end units the flanges abut against and align with the webs 38 extending inwardly from the side walls 23 and 24. T he flanges together with the webs 38 form a horizontal partition which, however, does not extend entirely to the rear wall 22 but is separated therefrom by the passageway 39.

On the flue units are the vertical webs extending along the sides thereof for a distance upwardly from the flanges 37 and between units these flanges abut against each other and on the end units the flanges abut against the vertical webs 41 on the adjacent side walls 23 and 24, the flanges 40 and the webs 41 forming a vertical partition above the flanges 37 for baflling the flow of the combustion products transversely of the units. The spaces 42 between the flanges 40 and the horizontal flanges 31 are open for the transverse passage of combustion products and likewise the spaces 43 between the horizontal flanges 31 and the top plate 25 are open for the transverse flow of the combustion products.

Substantially in alignment with the flanges 37 on the two units is the horizontally ex tending baflie plate 44 which rests on the front sections of these flanges and is secured at its end to the side walls 23 and 24 as by means of bolts 45. This plate forms a continuation of the bafile wall formed by the flanges 37 and webs 38 and has holes 44 therethrough which, as will be explained later, permit direct upward flow of some of the products of combustion.

Substantially in alignment with the upper edges of the vertical flanges 40 is the plate 46 which rests between lugs 47 and 48 on the units and which is secured at its end to the side walls 23 and 24 as by means of bolts 49. This plate has forwardly and clownwardly extending fingers 50 which cooperate with the baffle plate 44 to support and align the radiant units or mantles 51.

'Describing now the burner structure and arrangement, the burner body 52 is rectangular and has the front and rear ridges 53 and 54 provided respectively with the gas outlet ports 55 and 56. The burner body has the supply pipe 57 extending downwardly and laterally therefrom for connection with a gas supply main in the usual manner at one end of the heater structure. Secured to this pipe and to lugs 58 on the burner body is a plate or tray 59.

The burner body is positioned within the opening 60 in the bed plate 17 along the front of the flue units and the side walls 22 and 23 extend forwardly along the sides of this opening. The burner body is inserted through the opening from the bottom thereof and on its side has fins 61 and 62 each provided with a notch 63, which notches receive the supporting fingers ,or lugs 64 extending from the bed plate 17 adjacent the front and rear edges of the opening 60, and after the burner has been inserted vertically it is shifted laterally to carry the notches 63 away from the lugs and to bring the fins 61 and 62 above the lugs so that the burner will then be supported vertically. After such lateral shifting of the burn-er to support it on the lugs, a wedge member 65 is inserted between one end of the burner body and the adjacent edge of the opening 60 so as to lock the burner against longitudinal displacement, as clearly shown in Figures 4 and 5. "When the burner is in position, the tray 59 will register with the opening 60 but will be displaced a distance below the bed plate 17 for the passage of air to the burner. Additional openings 66 are provided in the bed plate in front of the burner for the flow of air.

The ornamental front 12 for the outer casing has the sill 67 which along its inner end provides the horizontal shelf 68 for supporting the radiant units or mantles 51. 'These units are of porcelain or other ceramic ma terial and are tubular and of rectangular cross section. is shown in Figure 1, their front walls'are of scroll or grill formation and the front and rear walls have the baflle points or projections '69. The units are open at their lower ends andrest with their front edges on the ledge 68 and are held thereon by pins 70 projecting from the ledge. The upper ends of he units are closed and flanges 71 extend upwardly therefrom to abut against the rear sides of the lingers 50 on the plate 46, the units resting with heir back walls against the front edge of the baffle plate 447 the units being thus accurately held in align ment and being placed side to side to form a continuous wall. At their lower ends, the

aligned units are above the ports 55 in the front ridge 53 of the burner so that the frame from these ports will PIOjQClZ into the units and heat them, and particularly the points 69,

to incandescence, and this heat is radiated 111g in the ornamental front 12. ucts ofcombustion may'flow from these units through" holes 71 provided in the back wallsof the units near the upper ends, thereof. These products of combustion wlll flow upwardly and through the passages 42 and, 43

between the flue units into thespace 84 from whichthey escape through the outlet and through the stack or chimney,

To protect the radiantunit or mantle and to keep persons from coming incontact therewith, bars 72 are extended infront thereof between the side walls of the" ornamental front 12, as shown. in Figures 1 and 6. These bars are detachably applied in suitable open- ,ings 73 and at one end each bar has a lug 74 for'engaging behind the corresponding wall so that the bars are thus locked against hori- Y parts,particularly the burner structure, are

Zontal displacement a ter having been applied. t will be noted that the rear rowof gas ports 56 is behind the wall of mantles so that practically all of the heat furnished by the burning of the gas at these ports is uti-- li'z-ed in heating the fines through which air travels for delivery into the room from the top of the heater. The gas issuing from'the front row of ports is utilized in greater parts in heating the mantles for the radiant discharge of heat into the room.

The outer ornamental casing is spaced away at the rearand sides from the inner or 1 eating structure and these spaces aretopen at the bottom with the space below the heater through openings 75 in the bed platel? and at their upper ends these spaces are open to the atmosphere through the passages 16 in the top or cover plate 15.

The operation of the heater is as follows:

The products of combustion from the rear row of gas ports are drawn rearwardl by the chimney draft and flow through the spaces between the flue units below the baflie wall formed by the unitflanges 87 and webs .1 38, the products flowing upwardly through the passage 39 behind the vertical baflie wall low the baifle wall formed by the flanges 31 and the webs 32, and the products then flow v rearwardly through the passages 43 nd into,

the space 34 and out of the stack. The products of combustion take thus a clrcuit'ouspath aroundand about the fines and heat the air traveling upwardly through the fines,

which air is delivered fromr the top of the a heater into the room to be heated. v, The gas from the front row of gas ports- 55 is utilized in greater part in heating the radiant units or mantles to incandescence and the heat is radiated from these mantles forwardly and into the room. The productsof combustion escape through the openings the mantles and upwardly through the.

'65 passageways 43 into the space 34and tothe n heating structure. formed by the flanges 40 and webs 41, and then forwardly through the passages 42 be stack. Some of the products of combustion from the rearrow of ports, which escapethe ullof the draft will flowuawardl throu h the-holes 46,. in the ba-flie plate 44 and ,then

throughthe spaces between the fingers 50 and then through the passageways 43 and to the.

stack, Air also flows upwardly through the openings 7 5 and through the space between theouter casing and the innerstove structure and is heated and flows into the room through the openings 16 in the top 15.

- -My improved heater has all the advan designed so that they may be readily and quickly 7 assembled or dismantled.

Modifications and chan es n the structure, arrangement and operation may be made without departing from the scope and spirit of the invention, and I do not, thereflow of air to be heated, a single burner structure at the bottom of said stove body having a rear row of gas outlet ports, means for deflecting around and through said flue. strucpassageways therethrough for the upward ture the products of combustion resulting from the burningof gas at said ports, said burner havmma front row of "as orts and upright radiant elementsmounted in'a row above said front row of ports to receive 'gas only from said ports and to be heated by the burning of the gas at said ports and toradiate the heat forwardly to the exterior of said 2. In a heating structure of the class do scribed, the combination of a stovebody, aflue structure within; said body having vertical passageways for the flow of air to be heated, a rear rowiof gas ports forburning flowing th-erethrough, a row .of radiant units in front of the lower part of sald flue structure forming a vertlcal baffle wall in front of gas for heating said flue structure and the air said r ar gas ports forrestricting the prodv nets of combustion from said ports toflow toward said flue structure, and an independent row of gas portsfor delivering gas lnto said units for the heating thereof, the heat being radiated from said radiant units forwardly from the front of the heater structure. I

3. In a gas heating structure, the combination ;of a supporting base, Walls mounted on said base forming-anenclosure, flue struc ture within said enclosure having vertical passageways for the flow of air to be heated, an opening in said base in front of said flue structure, a burner structure adapted to be projected upwardly through said opening,

wings on said burner structure having notches, lugs on said base for registering with said notches whereby when said burner is projected through said opening said notches will permit vertical passage of said wings past said lugs and longitudinal shift of the burner structure will then carry said wingsin position to rest on said lugs, and means for locking said burner structure against longitudinal displacement.

l. In a gas heating structure,-the combination of a supporting base, walls mounted on said base forming an enclosure, flue structure within said enclosure having vertical passageways for the fiow of air to be heated, an opening in said base in front of said flue structure, a burner structure adapted to be projected upwardly through said opening, wings on said burner structure having notches, lugs on said base for registering'with said notches whereby when said burner is projected through said opening said notches will permit vertical passage of said wings past said lugs and longitudinalshift of the burner structure will then carry said wings in position to rest on said lugs, and a wedge member inserted in said opening between one end thereof and the adjacent end of said burner structure for locking said burner structure against longitudinal displacement after application thereof on said lugs.

5. in a gas heating structure of the class described, the combination of a supporting base, walls supported on said base forming an enclosure, flue structure within said enclosurehaving passageways for the flow of air to be heated, said base having an opening eX- tending along the front of said flue structure, a burner structure adapted to be projected upwardly through said opening, means operable during longitudinal shift of said burner structure within said opening for locking said burner structure against vertical displacement,and wedge mechanism for locking said burner structure against longitudinal,

displacement. V

6. In a heater structure of the class de scribed, a combination of a supporting base, walls mounted on said base forming an en closure, flue units mounted within said enclosure and having vertical passageways for the flow of air to be heated, a burner at the lower part of said enclosure, said burner having a rear row of gas ports for the combustion of gas for heating said flues, said burner having a front row of gas ports, a row of radiant units mounted above said front row of ports to receive gastherefrom'and to be heated thereby, a horizontal baffle wall structure above the rear row of ports, said radiant units resting with their backs against the the front of said radiant units, said fingers and said bafile wall holding said radiant units in alignment, and an ornamental outer casing surrounding said enclosure and having an opening through which said radiant units are exposed for the radiation of the heat from said radiant units.

7. A combination radiant and circulating gas heater comprising an enclosing frame having an opening in its frontwall, a radiant fire structure forming a vertical wall across the inner end of said opening, a row of gas outlets below said radiant fire structure for supplying gas for combustion there in and for the projection of radiant heat outwardly hr-ough said opening, a vertical flue structure within said enclosing frame behind said radiant lire structure having a passageway for the upward How of air to the exterior of said frame at the top thereof, a stack outlet at the upper end of said frame, a row of burner outlets at the bottom of said frame between said flue structure and said radiant heat structure whereby the products of combustion from the gas burned in said outlets will flow around said flue structure and through said stack outlet to heat the air flowing through said flue structure, said radiant fire structure isolating said products of combustion from said radiant heat outlet opening in front of said radiant fire structure, and a hood formed on said frame above said opening for receiving the fumes and products of combustion from said radiant fire structure and directing them to said stack outlet.

8. A combination radiant and circulating gas heater comprising an enclosing housing having a front opening at the lower part thereof for the escape of radiant heat, a vertical wall of radiant units closing the inner end of said radiant heat outlet, a vertical flue.

element within said housing behind said radiant heat the eXterior of the housing at the top thereof, means providing atcrtuous path around said flue structure, the space behind said radiant heat wall communicating with said path at the lower end thereof and a stack outlet from said housing connected with the upper end of said path, a burner structure at the bottom of said housing having a front row of gas outlets for feeding gas into said radiant heat units for burning therein, said burner structure having a rear row of gas outlets for gas to be consumed in the space behind said radiant heat wall, said wall forming a baffle for directing the products of combustion from the space behind said wall into said path for upward flow through said path and out of the stack outlet, said wall isolating said products of combustion from said radis wall for the upward flow of air to the outflow of radiant heat, a radiant fire ant heat outlet, and a hood on saidhousing overhanging said radiant heat outlet and for recelvlng and directing the fumes and products of combustion from said radiant heat units to said stack outlet.

9. A combination radiant and circulating gas heater comprising an enclosinghousing having a front outlet along its lowerpart for structure forming a vertical wall closing the inner end of said outlet, a flue structure within said housing behind said wall, means forming a tortuous path around said flue for the flow ofproducts of combustion, there be 'ing an air passageway through said fluefor the passage of heated air to the exterior of said housing at the top thereof, the space behind said wall communicating with saidpath at its lower end and a stack outlet connected with the upper endof said path, a burner structure at the bottom of saidhousing having a front row of gas outlets for feeding 7 gas to the interior ofsaid radiant fire struc ture and having a rear row of gas outlets for supplying gas to the space behind said wall,

set of burner outlets atthe lower part of said combustion passageway.

712. A radiant and circulating gas heater comprising a housing having a front opening at the lower part thereof, longitudinally extending radiant units positioned aoross'the front opening andnormally exposed'to direct heat exteriorally of said housing, frontand f rear rows of gas burner outlets in said housirig,'fiue means cooperable with the rearrow of burner outletsdefining a path for the circulation of combustion products through a baifie between said wall and said flue struc- I ture cooperating with said Well to direct the products of combustion from said rear, row r of gas outlets into the lower end of said path" and for isolating said products of combustion from said radiant heat outlet; and a hood overhanging'said radiant h at outlet for receiving the fumes and nroducts of combustion from said radiant lire structure and con ducting them to said stack outlet.

10. In a gas heating structure of theclass described, the combination of a supporting base. enclosure mounted on said base. heating elements witbinsaid enclosure said base hav ng an opening, a burner st ucture adanted to be nroiected cunwardlv through 7 sa d onening. means onerable durinq'longiturlinal. shift of sa d burner structure-within said onenino; for locking. sa d burne structure against vertical displacement and means or lock ng aid burner structure against lon itudinal displacement. y

11 In a combination radiant and ,m'mflah int! gas heater. the combination of a housing 7 having a front onen ng at the lowe'rpart thereof, a vertical :wa l of radiant units extending across said opening for directexposure to the exterior of the housing; means defining an air passageway through said housing for the upward flow of air to the I exterior of the housing at the top thereof, a

stack outlet near the top of the" housing,

means defining a combustion passageway from the lower part of saidhousing to said stack outlet and in intimate association with said air passageway for heatingthe air flowing therethrough, a set of'burner outlets underlying said radiant units for supplying gas thereto for combustion therein, and. a second 

